<template>
  <div class="top-category">
    <div class="container">
      <!-- 面包屑 -->
      <!--
        mode="out-in"     旧元素先离开，新元素进入
        :key=""           key值不同，元素就不会复用以前的结构，会销毁旧的再创建新的
      -->
      <XtxBread>
        <XtxBreadItem to="/">首页</XtxBreadItem>
        <transition name="fade-right" mode="out-in">
          <XtxBreadItem :key="category.name">{{ category.name }}</XtxBreadItem>
        </transition>
      </XtxBread>
      <!-- 轮播图 -->
      <XtxCarousel :sliders="sliders" style="height:500px" />
      <!-- 所有二级分类 -->
      <div class="sub-list">
        <h3>全部分类</h3>
        <ul>
          <li v-for="item in category.children" :key="item.id">
            <a href="javascript:;">
              <img v-src="item.picture" />
              <p>{{ item.name }}</p>
            </a>
          </li>
        </ul>
      </div>
      <!-- 不同分类商品 -->
      <!-- 分类关联商品 -->
      <div class="ref-goods" v-for="item in category.children" :key="item.id">
        <div class="head">
          <h3>- {{ item.name }} -</h3>
          <p class="tag">{{ item.desc || '品质之选' }}</p>
          <XtxMore />
        </div>
        <div class="body">
          <GoodsItem
            v-for="goods in item.goods"
            :key="goods.id"
            :goods="goods"
          />
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import { findBannerAPI } from '@/api/home'
import { onBeforeMount, ref, watch } from 'vue'
import { useRoute } from 'vue-router'
// import { useStore } from 'vuex'
import { findFirstCategoryAPI } from '@/api/category'
import GoodsItem from './components/goods-item.vue'

export default {
  components: { GoodsItem },
  name: 'TopCategory',
  setup () {
    const route = useRoute()

    // 轮播图
    const sliders = ref([])
    onBeforeMount(async () => (sliders.value = await findBannerAPI(2)))

    // 一级分类
    const category = ref({})
    watch(
      () => route.params.id,
      async id => {
        if (route.path !== `/category/${id}`) return
        category.value = await findFirstCategoryAPI(id)
      },
      { immediate: true }
    )

    return { sliders, category }
  }
}
</script>
<style scoped lang="less">
.ref-goods {
  background-color: #fff;
  margin-top: 20px;
  position: relative;
  .head {
    .xtx-more {
      position: absolute;
      top: 20px;
      right: 20px;
    }
    .tag {
      text-align: center;
      color: #999;
      font-size: 20px;
      position: relative;
      top: -20px;
    }
  }
  .body {
    display: flex;
    justify-content: flex-start;
    flex-wrap: wrap;
    padding: 0 65px 30px;
  }
}
.top-category {
  h3 {
    font-size: 28px;
    color: #666;
    font-weight: normal;
    text-align: center;
    line-height: 100px;
  }
  .sub-list {
    margin-top: 20px;
    background-color: #fff;
    ul {
      display: flex;
      padding: 0 32px;
      flex-wrap: wrap;
      li {
        width: 168px;
        height: 160px;
        a {
          text-align: center;
          display: block;
          font-size: 16px;
          img {
            width: 100px;
            height: 100px;
          }
          p {
            line-height: 40px;
          }
          &:hover {
            color: @xtxColor;
          }
        }
      }
    }
  }
}
</style>
